2171057069 has 8 divisors (see below), whose sum is σ = 2241626880. Its totient is φ = 2100520800.

The previous prime is 2171057047. The next prime is 2171057087. The reversal of 2171057069 is 9607501712.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2171057069 - 2¹² = 2171052973 is a prime.

It is a super-2 number, since 2×2171057069² = 9426977593709741522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2171057269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250529 + ... + 259049.

It is an arithmetic number, because the mean of its divisors is an integer number (280203360).

Almost surely, 2^2171057069 is an apocalyptic number.

It is an amenable number.

2171057069 is a deficient number, since it is larger than the sum of its proper divisors (70569811).

2171057069 is an equidigital number, since it uses as much as digits as its factorization.

2171057069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16771.

The product of its (nonzero) digits is 26460, while the sum is 38.

The square root of 2171057069 is about 46594.6034321572. The cubic root of 2171057069 is about 1294.8627770104.

The spelling of 2171057069 in words is "two billion, one hundred seventy-one million, fifty-seven thousand, sixty-nine".